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USENS-T

UHF PARTIAL DISCHARGE SENSOR

Real-Time Partial Discharge Detection for Transformer Tank Applications 

Designed for precision and durability, the UHF PD sensor accurately monitors partial discharge activity in oil-filled and dry-type transformers and reactors. Its high sensitivity ensures early detection of potential issues, enabling proactive maintenance and enhanced asset reliability.

Data Sheets
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Features
  • Highly Sensitive
  • Wide Band Frequency Response
  • IP68 Protection
  • Leak-Proof Sensor
  • Integrated Overvoltage Protection
  • High Dielectric Strength
  • Customized Design
Benefits
  • Enhanced Compatibility
  • Reliable and Safe Operations
  • Longer Operational Lifespan
  • Cost-Effective Monitoring
  • Low Signal-to-Noise Ratio
  • Rugged and Durable
Applications
  • Power Transformer PD Testing and Monitoring
  • Reactor PD Testing and Monitoring
  • Distribution Transformer PD Testing and Monitoring
  • Continuous Online PD Monitoring
  • Periodic PD Testing and Measurements
  • High Voltage Testing during Commissioning
Technical specifications
UHF Frequency Response

200 – 3000 MHz

Sensitivity

up to -90 dBm

Average Effective Height over 500MHz – 1500MhHz

25mm+

Min. Effective Height over 500Mhz – 1500Mhz

6 mm+

Output

N-Type connector; Customized option available

Connector Circuit Impedance

50 Ω

Oil Pressure

up to 10bar

Vacuum Tightness

< 0.10 mbar, Leakage rate < 0.0001 mbar/sec

Vibration Testing

Suitable for HV – GIS and Transformer applications

Ingress Protection (IP)

IP-68

Ambient (Operating Temperature)

-60 °C to +150 °C

Storage Temperature

-60 °C to +150 °C

Withstand Voltage

up to 1500 kV

Operating Humidity

95% humidity at 50 °C

Dimensions

Customized as per Transformer Flange Design

Weight

app. 1.5 KG; Customized as per customer requirements / Transformer Design

Install Position

Transformer Tank, Inspection Cover, Transformer Dielectric Window

Signal Cable

Very low attenuation UHF (Coax) cable

Ordering Code

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